Rare Kellawaysites multicostata Ammonite Fossil Jurassic Oxfordshire UK Genuine COA

Description

Authentic Jurassic Fossil from Oxfordshire, UK

This rare Kellawaysites multicostata ammonite fossil is a genuine specimen from the Lower Callovian stage of the Middle Jurassic, collected in Oxfordshire, United Kingdom. Every fossil offered is carefully selected for quality and scientific interest, ensuring you receive not only a striking display piece but also a meaningful connection to Earth’s deep past. This specimen comes complete with a Certificate of Authenticity, guaranteeing its provenance and genuineness. The accompanying photos show the exact fossil you will receive, with scale rule squares of 1 cm to provide a clear sense of size and proportion.

Geological Age and Provenance

The fossil dates to the Lower Callovian stage of the Jurassic Period, approximately 166–164 million years ago. During this time, the region now known as Oxfordshire was submerged beneath shallow epicontinental seas, forming part of the extensive Jurassic marine basins across Europe. The depositional environment consisted of soft muds and silts that created ideal conditions for the preservation of ammonites, as well as other marine invertebrates. These layers represent part of the famous Oxford Clay Formation, a world-renowned geological unit celebrated for its diverse and exceptionally well-preserved fossil record.

Fossil Type and Species Identification

Kellawaysites multicostata belongs to the class Cephalopoda, order Ammonitida, and is placed within the superfamily Perisphinctoidea. This genus is known for its strongly ribbed, planispiral shell with distinctive, closely spaced costae (ribs) that give it its name “multicostata.” Such morphological features allowed paleontologists to differentiate it from other ammonites of the period, and these traits also make it a striking fossil for collectors and enthusiasts. The identification of this specimen is based on established paleontological research into Callovian ammonites of Britain, with Kellawaysites being a key marker genus used in Jurassic biostratigraphy.

Scientific and Collectible Value

This ammonite is not only a fascinating decorative specimen but also an important piece of geological history. Fossils of Kellawaysites multicostata serve as biozone indicators, meaning they are used by geologists to identify and date specific layers of Jurassic strata. Their distinctive ribbing and shell form make them highly recognisable in the fossil record. Specimens from the Oxford Clay Formation are also particularly significant because of their global importance in understanding Middle Jurassic marine life and environments. Owning such a fossil offers collectors and enthusiasts a chance to hold a part of scientific history in their hands.

Condition and Presentation

The fossil has been carefully prepared and stabilised to ensure long-term preservation while retaining its natural features. Its ribbed ornamentation is clearly visible, showcasing the intricate growth lines that mark its development millions of years ago. This is not a cast or reproduction—this is a one-of-a-kind, genuine fossil specimen with all its authentic geological character. The photographs provided show the actual fossil you will receive, so you can buy with confidence knowing exactly what will arrive.

Guarantee of Authenticity

All of our fossils are 100% genuine specimens. With your purchase, you will receive a Certificate of Authenticity for your records, verifying that the fossil is authentic and sourced responsibly. We take pride in offering scientifically significant and ethically obtained fossils to collectors, educators, and enthusiasts worldwide.

This Kellawaysites multicostata ammonite fossil from Oxfordshire is a rare and scientifically important specimen, making it an ideal addition for serious collectors, geology enthusiasts, and those who appreciate natural history.